Beebe



(No Model) A v N. S. BEEBE 8U A. A. BOURGEOIS.

MECHANICAL STOKBR FOR EURNAGBS. No. 586,265.

Patented July 13 e-E-n VWS/@2695565 UNITED ASTrJFEs PATENT' OFFICE.

mrunix s.v nEErE, OF sPmseFmLD, AND 'ABRAHAM A. BOURGEOIS, oF

LONG MEADOW, MASSACHUSETTS;

BEEBE.

SAID\BOURGEOIS ASSIGNOR 'TO SAID M ECHANIOAL sToKx-:R -FOR FURNAoEs.

sPncIFicArIoN forming pm of Letters Patent Nc. 586,265, dated July 1s,1897.

' Application mea November a, 1996. serial No.' 610,992. (No man.)

To all whom it may concern:

Be it known that We, NATHAN S. BEEBE, re siding at Springfield, andABRAEIAM A. BOUR- GEOIS, residing at East Long Meadow, in the county ofHampden and State of Massachusette, citizens of the United States ofAmerica, have invented new and useful Improvements in Mechanical Stokersfor Boiler or other Furnaees, of which the followingis a specification.This invention relates to mechanical stokers for boiler or otherfurnaces, and has for its object the construction of such a stokingdevice whereby an even distribution of fuel is assured throughout thelength of the fire-box of said furnace; and it eonsist'in theconstruction and arrangement of the devices for the above-mentionedpurpose, all as hereinafter fully described and vciaimed.

In the drawings forming part of this speciiication, Figure l is a planview in section of 4a part of a boiler or other fire-box and th@ stokingmechanism therefor. Fig. 2 is a side elevation of the same, also insection. Referring to the drawings, Aisthe fire-box, and B is the daringmouthpiece of the trough C. Said trough is of rectangularforni incrosssection and is carried back away from said fire-box to the sourceof supply of the fuel to be used in the fire-box. The mouthpiece Bthereof is preferably madeof cast.-`iron,- as it is subjected to quite ahigh temperature,whieh would cause the distortion thereof if it weremade of sheet metal, which is the material used in the construction ofsaid trough C.

In mechanical stokers as ordinarily made it is im possible to get auniform distribution of the fuel, especially where they are applied tothe furnaces of boilers used 'in the woodworking industries,where thesaid fuel being of a very light nature a strongaincurrent is employed.vto convey`it to the furnace from various parts of the mill. Under suchconditions the fuei is piled up alongA the side of the fire-box oppositethe mouth of the delivery-pipe, andis not only very wasteful of fuel,but requires the attention of a fireman to even it up over the surfaceof the grate-bars. To obviate these cbjections,we have constructed themouth of the fuel-distributing pipe very flaring horizontally andlocated therein a swinging vertical partition D, secured to a verticalshaft E, located substan tially midway7 between the ends of saidpartition. On o'nc end of said vertical shaft is secured a crankarm F,connected by a pitman G or connecting-rod to a smaller crank rotated bya pulley7 II or other suitable meanswhereby more y or less rapidIoscillatory motion may be im' parted to lthe said swing partition. Thesaid partition is of cast-iron or other suitable metal, and the inner'end L thereof is made thin to easily part the stream of fuel directedagainst it by the air-current. From said end L to the opposite endthereof it is tapered to form the wedgeshaped partition shown in thedrawings. When near tlie' end next to the {ire-box, the sides of saidpartition are curved quite sharply outward, as at M,to the end that thestream of fuel carried by the air-current may be deliected toward theends of the refbox as the said partition swings from side to side. waybetween the vertical sides of the mouthpiece B of the Stoker, thedivided stream takes a nearly straight course,being very little eifectedby the curved sides of said partition, and thus the part of the fire-boxin a line with said, partition D is supplied with fuel Secuged'to theinside of the small end of the said mouthpiece are two springs O O,against which the end of the .partition strikes as it is oscillated byits driving mechanism.

Having thus described our invention,what we claim, and desire to secureby Letters Pat-v ent, is

1. In a mechanical Stoker, the swinging divisional partition centrallylocated within the enlarged end of a fuel-delivering conduit, saidpartition being tapered from one end to the other, and the sides thereofat its larger end being outwardly tapering, and means for imparting areeiprocatory motion to said partition, substantially as described.

2. In a mechanical Stoker, the swinging divisional partition centrallylocated within the enlarged end of a fuel-delveringconduit, said W'hensaid partition is about mid' partition being tapered from one end to theother, and the sides thereof at its larger end being outwardly tapering,and buier-springs to receivethe impact of the end of said swingingpartition, and means for imparting mo- .tion to said swinging partition,substantially IOO

